We have been getting a great response on our new ROBO Series of aluminum cock rings at gear essentials.
A ROBO Three-way: From Left to Right--Half Screw, Surge and Another Surge
The cock rings of the ROBO Series by gear essentials are made of quality aluminum in a softly brushed finish. In addition to featuring cutting edge design, these rings have the new interior comfort fit to make them even more comfortable! Combine this with the light-weight nature of aluminum and you have a ring that you just might forget you have on! These hard metal cock rings are super comfortable whether you are freeballing it or wearing tight underwear. But don't be fooled--just because you don't remember you have it on doesn't mean it isn't doing what it is supposed to do: make your package bigger and make your dick fuller, thicker and stronger.
Consider it your ace in the hole. And remember--ENJOY!